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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QtWidgets>
++
++ #include "arrowpad.h"
++ #include "mainwindow.h"
++
++ MainWindow::MainWindow()
++ {
++ //! [0]
++ arrowPad = new ArrowPad;
++ //! [0]
++ setCentralWidget(arrowPad);
++
++ //! [1]
++ exitAct = new QAction(tr("E&xit"), this);
++ exitAct->setShortcut(QKeySequence(tr("Ctrl+Q", "Quit")));
++ connect(exitAct, &QAction::triggered, this, &MainWindow::close);
++ //! [1]
++
++ fileMenu = menuBar()->addMenu(tr("&File"));
++ fileMenu->addAction(exitAct);
++ }